I've owned two of these so far (both in red) for my 14lb pup. She's very high energy, so I use it on car rides to keep her safe and secure. I also use it on the plane, as the carrier fits under the seat in front of me. I've used it on several different airlines and haven't had any problems. The first bag I had looked like the one pictured. My dog busted the zipper, so we bought a second bag. This one has flaps that can be lowered over the mesh part, allowing for ventilation, but also giving the dog more privacy when desired. This is great for traveling when my dog gets a little anxious. Since we use the bag when traveling almost anywhere, my dog gets so excited when she sees the red bag, because she knows she's going somewhere fun (even to the vet). She doesn't mind being in the bag, and can easily turn around in it.